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The SKF 6307-2RS1/C3 sealed deep groove ball bearing is engineered for machinery operating with substantial radial loads and varying thermal conditions. Its 35mm bore, 80mm outside diameter and 21mm width provide the robust cross-section associated with SKF's 63 series. The single row deep groove raceways accommodate radial loading together with axial forces in either direction, within the bearing's rated limits. SKF Explorer specifications list a basic dynamic load rating of 35.1kN and a basic static load rating of 19kN. These figures support bearing-life calculations and assessment of demanding operating conditions. Unlike the standard 6307-2RS1, this version features C3 internal clearance, providing greater initial radial play to compensate for clearance reductions caused by tight mounting fits and temperature differences between the rings.
The 2RS1 rubber contact seals protect both sides of the bearing, retaining factory-applied grease and restricting the entry of dust, moisture and other contaminants. This reduces routine lubrication requirements in enclosed motors and mechanical drives. SKF specifies a limiting speed of 6,000rpm, although continuous operating suitability depends on load, lubrication conditions, seal friction and temperature. The bearing incorporates a sheet metal cage and SKF Explorer construction. C3 clearance is not automatically preferable for every application: excessive operating clearance can affect noise, vibration and load distribution, so the required clearance class should be confirmed against the equipment manufacturer's specification. When replacing a bearing, check the complete 6307-2RS1/C3 designation rather than relying on the dimensions alone.
Typical Applications:
Industrial electric motors with specified C3 clearance
Centrifugal pumps and circulation equipment
Conveyor drive and pulley shaft assemblies
Agricultural machinery and powered equipment
Industrial gearboxes and mechanical transmission systems
